Bun-to-creatinine ratio
What is Bun-to-creatinine ratio?
BUN-to-creatinine ratio is the ratio of the blood urea nitrogen (BUN) (mg/dL) and serum creatinine (mg/dL) (Cr). The ratio may be used to determine the cause of acute kidney injury or dehydration.The principle that both urea (BUN) and creatinine are freely filtered by the glomerulus, however urea reabsorbed by tubules can be regulated whereas creatinine reabsorption remains the same.
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